Spring MVC URI template not working correctly

[sajee]

In Spring MVC 3.0.5 on Tomcat 6, I can go to http://localhost:8080/myapp/browse/books and the method is resolved correctly.

@RequestMapping(value="/browse/{categoryName}");

However this doesn't work:

@RequestMapping(value="/browse/category/{categoryName}");

Browsing to

http://localhost:8080/myapp/browse/category/books

generates a HTTP 404 from Tomcat.
I'm sure I'm following the examples here correctly. What am I doing wrong?

Here's the full controller method:

@Controller
public class BrowseController {
    @RequestMapping(value = "/browse/category/{categoryName}", method = RequestMethod.GET)
    public String showCategory(@PathVariable("categoryName") String categoryName, Model model) {
        model.addAttribute("categoryName", categoryName);
        return "Browse";
    }
}

I see this message in the Tomcat output window in Netbeans 6.9:

Nov 14, 2010 2:02:03 PM org.springframework.web.servlet.DispatcherServlet noHandlerFound
WARNING: No mapping found for HTTP request with URI [/myapp/browse/category/books] in DispatcherServlet with name 'dispatcher'

[Rossen Stoyanchev]

The mapping looks correct to me. Enable DEBUG logging for org.springframework.web to see if you get any more information on the request. Do you have any other controllers mapped to URL patterns that may also match to the incoming URL?

[sajee]

I'm new to Spring. How do I enable DEBUG?

I only have one other controller and it's mapped to a completely different URL.

[Rossen Stoyanchev]

Spring using commons logging so you just need to do what you normally do to increase logging in your app. If you use log4j as your logging framework you'd modify your log4j configuration to enable logging for the "org.springframework.web" category:

<logger name="org.springframework.web">
  <level value="debug" />
</logger>

[sajee]

Thank you. I'm really very new to all this but can you provide more details on setting up logging? Which file do I add this to?

<logger name="org.springframework.web">
  <level value="debug" />
</logger>

Are there any other changes I need to make?

Once DEBUG is enabled, where do I find the log file?

Thanks again for your help.

[Rossen Stoyanchev]

You might want to check what you're using for logging by looking at the list of application dependencies. Assuming that's log4j, I suggest looking up the documentation for that logging framework.

[sajee]

I figured out logging. Yay.

So now when I make a request such as http://localhost:8080/myapp/browse/category/model

I see in the log:
Nov 15, 2010 9:34:28 PM org.springframework.web.servlet.DispatcherServlet noHandlerFound
WARNING: No mapping found for HTTP request with URI [/myapp/browse/category/model] in DispatcherServlet with name 'dispatcher'

In case it matters, here's how my dispatcher is defined in web.xml:

<servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>2</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

Is there anything wrong with any of this? Any clues as to to why it's not working?

[sajee]

Also, I see the following in the Tomcat6 log:

INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@b29562: defining beans [browseController,homeController,showController,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping#0,viewResolver]; parent: org.springframework.beans.factory.support.DefaultListableBeanFactory@22a6bb
Nov 15, 2010 9:44:26 PM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler
INFO: Mapped URL path [/browse] onto handler 'browseController'
Nov 15, 2010 9:44:26 PM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler
INFO: Mapped URL path [/browse/*] onto handler 'browseController'
Nov 15, 2010 9:44:26 PM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler
INFO: Mapped URL path [/home] onto handler 'homeController'
Nov 15, 2010 9:44:26 PM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler
INFO: Mapped URL path [/home/*] onto handler 'homeController'
Nov 15, 2010 9:44:26 PM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler
INFO: Mapped URL path [/show] onto handler 'showController'
Nov 15, 2010 9:44:26 PM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler
INFO: Mapped URL path [/show/*] onto handler 'showController'

[sajee]

Fixed: http://stackoverflow.com/questions/4...-form-of-a-b-c